Amateur Radio Receivers

"The Electroluminescent Receiver Kit"

Electroluminescent Diode: a p-n junction device which takes electrical current and voltage and changes it directly to light. (QST, July 1974, page 62.)

Electroluminescence: the means by which LED's create light.

The Electroluminescent Receiver

Shown with the parts included in the kit with the optional LED Frequency Counter, Frequency Stabilizer (mounted in the bottom back) and S-Meter. Covers the CW portion of 40, 30, 20 and 17 Meters. Can be easily modified to cover the SSB section of 40, 20 and 17 Meters. Easy to follow pictorial instructions makes it a fun build.

Designed as a blood thirsty DX machine, it appeals to the young and the young at heart. With large boards and plenty of room, it is easy to insert parts, diagnosis, and make modifications.

The LEDs show circuit function - MOSFET (13 used) circuit health, gain of the amplifiers, oscillator drive, mixer gain, switching functons, and 12V power - it is the easiest superhet receiver to diagnosis and repair ever!

The ELR, which runs with the big boys, is finding a nitch with the little ones...and the YL's, too!

SWL Listeners

The tuning range of the VFO is expanded to 500kHz to cover most of the 41/31/19/16 Meter SWL bands. Duncan Watson and Gary Rondeau have sent in modifications they made for improved performance of their receivers. They include VFO, crystal filter, AM Detection, and AGC modifications and improvements - check them out.